luc14n0/glib
1
0
Fork 0
mirror of https://gitlab.gnome.org/GNOME/glib.git synced 2024-11-14 05:16:18 +01:00
Code Issues Packages Projects Releases Wiki Activity

Test the alignment of the refcounted box allocations

Browse Source 
Check that the allocations are aligned regardless of the block size.
This commit is contained in:
Emmanuele Bassi 2018-11-14 17:49:26 +00:00
parent 87f0a5a219
commit f81723e675
1 changed files with 60 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
glib/tests/rcbox.c
View File

@ -220,6 +220,64 @@ test_atomic_rcbox_dup (void)
g_assert_null (global_point_b);
}
/* The expected alignment of the refcounted data, absent any other
* alignment requirement, is `2 * sizeof(void*)`; GLib only really
* supports void* sized 8 or 4 (see the comment in gatomic.h)
*/
#if GLIB_SIZEOF_VOID_P == 8
static const gsize rcbox_alignment = 16;
#else
static const gsize rcbox_alignment = 8;
#endif
/* verify that the refcounted allocation is properly aligned */
static void
test_rcbox_alignment (void)
{
const gsize block_sizes[] = {
1,
2,
4,
sizeof (gint32) * 3,
};
int i;
for (i = 0; i < G_N_ELEMENTS (block_sizes); i++)
{
gpointer p = g_rc_box_alloc0 (block_sizes[i]);
g_assert_nonnull (p);
g_assert_true (((guintptr) p & (rcbox_alignment - 1)) == 0);
g_rc_box_release (p);
}
}
/* verify that the atomically refcounted allocation is properly aligned */
static void
test_atomic_rcbox_alignment (void)
{
const gsize block_sizes[] = {
1,
2,
4,
sizeof (gint32) * 3,
};
int i;
for (i = 0; i < G_N_ELEMENTS (block_sizes); i++)
{
gpointer p = g_atomic_rc_box_alloc0 (block_sizes[i]);
g_assert_nonnull (p);
g_assert_true (((guintptr) p & (rcbox_alignment - 1)) == 0);
g_atomic_rc_box_release (p);
}
}
int
main (int argc,
char *argv[])
@ -229,10 +287,12 @@ main (int argc,
g_test_add_func ("/rcbox/new", test_rcbox_new);
g_test_add_func ("/rcbox/release-full", test_rcbox_release_full);
g_test_add_func ("/rcbox/dup", test_rcbox_dup);
g_test_add_func ("/rcbox/alignment", test_rcbox_alignment);
g_test_add_func ("/atomic-rcbox/new", test_atomic_rcbox_new);
g_test_add_func ("/atomic-rcbox/release-full", test_atomic_rcbox_release_full);
g_test_add_func ("/atomic-rcbox/dup", test_atomic_rcbox_dup);
g_test_add_func ("/atomic-rcbox/alignment", test_atomic_rcbox_alignment);
return g_test_run ();
}